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  1. M

    2012 VP 300 C-A Exhaust manifolds getting too hot - DTC 441 & 442

    Make sure to read the workshop manual first. There are some parts that can't be reused.
  2. M

    2012 VP 300 C-A Exhaust manifolds getting too hot - DTC 441 & 442

    My mistake, thought you were saying that if the air pocket was near the sensor that would cause the sensor to read hot. And of course, that's not true.
  3. M

    2012 VP 300 C-A Exhaust manifolds getting too hot - DTC 441 & 442

    You have this backwards. Liquid transfers heat better than air/vapor.
  4. M

    2012 VP 300 C-A Exhaust manifolds getting too hot - DTC 441 & 442

    The problem with air in the system is that it degrades the coolant you're using. What you have now lasts about 5 -6 years before it stops protecting against corrosion. Keep adding air to it and that life starts dropping. All depends on how long you want to keep the boat. I used to joke with...
  5. M

    WINTERIZING: Full fuel tank vs Empty fuel tank

    Minnesota here. Empty is best, but to get a built in boat fuel tank empty. You have to pull the sending unit and pump it out. If you just use the fuel line, you will leave about 1" of fuel in the tank --- not so good. Never full, when it warms up you will have fuel everywhere. 3/4 to 7/8. I'm...
  6. M

    2012 VP 300 C-A Exhaust manifolds getting too hot - DTC 441 & 442

    If this was a pressure test on a full and cold system. No it's not OK, you have a leak.
  7. M

    5.0GL-C won’t get on plane

    Try reading this. https://forums.iboats.com/threads/how-to-testing-your-boats-fuel-system.278642/ maybe one of the mods could fix this link in the sticky’s.
  8. M

    5.0GL-C won’t get on plane

    Did you replace the power valve in the carb?
  9. M

    Does VP go nuts on revisons and models vs. Mercrusier?

    Volvo serves more of a worldwide market. They have more variations.
  10. M

    Need help to identify Perko strainer basket replacement

    Are you sure you have Perko? Thought Sea Ray used Groco in 88
  11. M

    Do VP 5.7 differ in winterizing procedures?

    Your owners manual covers most of what you need to know. If you don't have a copy, you can download one here----- https://www.volvopenta.com/en-us/service-and-support/your-engine/manuals-and-handbooks/ Enter your serial number for the best results. Once you review what Volvo recommends, would...
  12. M

    2012 VP 300 C-A Exhaust manifolds getting too hot - DTC 441 & 442

    That's where to start, some need longer some need faster. Sounds like idle speeds are not enough. And do this in the water or at least make sure the engine is level.
  13. M

    ECM Swap ? Plug and play ???

    I’ve been retired for a few years so my information is a bit outdated. But back then if I needed a ECM, I would order by serial number. I wasn’t allowed to order a high output ECM for a standard engine. The only people who could load a program was Volvo or their dealer support tech, he carried a...
  14. M

    2012 VP 300 C-A Exhaust manifolds getting too hot - DTC 441 & 442

    I should have said the only reason the small hose is there is to bleed the air out.
  15. M

    2012 VP 300 C-A Exhaust manifolds getting too hot - DTC 441 & 442

    Don’t rev the engine. Slowly increase RPMs. Check the small hose I mentioned earlier. That’s there to bleed the air out.
  16. M

    2012 VP 300 C-A Exhaust manifolds getting too hot - DTC 441 & 442

    I drained mostly empty first. A couple of reasons. If the tool starts sucking coolant it will make a antifreeze mist that I don’t want to breath. Also it really slows down how fast you can draw a vacuum and my labor charge was more then the cost of coolant. Plus new coolant is better than old...
  17. M

    2012 VP 300 C-A Exhaust manifolds getting too hot - DTC 441 & 442

    When filling the cooling system, it can be tough to get all the air out. Generally speaking you want the RPMs up to about 1500. Some engines can be really hard. Back in the late 90s/early 2000s there were some "blue" 5.7L engines that the factory would send us special thermostats with some holes...
  18. M

    2012 VP 300 C-A Exhaust manifolds getting too hot - DTC 441 & 442

    Not sure if the kit will have a cap to match, my tester is so old it's from back when steel caps came in two sizes. I have made a few caps over the years by gutting a new cap and screwing in an adapter. But any pressure tester will work, for a number of years I used my gearcase pressure tester...
  19. M

    2012 VP 300 C-A Exhaust manifolds getting too hot - DTC 441 & 442

    Not sure where you get this info. If you go to the link I posted earlier and enter your serial number. This is what you should see. Here you can search for operator manuals and other product related information for your Volvo Penta product. You can download a free digital version or purchase...
  20. M

    2012 VP 300 C-A Exhaust manifolds getting too hot - DTC 441 & 442

    “The DTC was pretty much the same“ Do you mean like only one number off? What did the four exhaust temp senders read?
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